Arweave

No interest anywhere in the protocol: miners are paid from fees, a decreasing block reward and a storage endowment that is not lent out.

Riba is interest or any guaranteed increase on a loan. Arweave miners earn a variable reward for work: new AR from a decreasing inflation schedule, part of transaction fees and, when needed, payments from the storage endowment. The endowment is a pool of AR for paying for storage, not a loan. Sharlife, the first authoritative source that rates AR, lists it as permissible, so the criterion is at the maximum.

AR is the payment token for a real service: permanent data storage.

This criterion asks whether the asset has real value as property (mal). AR is needed to buy storage on Arweave and is how miners are paid for storing data. Sharlife rates AR permissible, and the general dispute among scholars about whether crypto is property is not a weakness of this coin, so the criterion is at the maximum.

AR has no chance-based payout or meme mechanics; it pays for a measurable service.

Maysir is gambling: gaining or losing by chance rather than through productive exchange. AR is spent on storage and earned for storing data. Trading by speculators is not a feature of the token, so the criterion is at the maximum.

The network earns only storage fees for a real service; no lending or interest income.

This criterion asks how the network earns and whether any of that income is impermissible. Arweave earns one-time storage fees, which fund miners directly and through the endowment. CryptoUmmah finds no interest-bearing holdings or yield mechanisms at protocol level. No impermissible income is documented, so the criterion is at the maximum.

Supply and rules are public and the code is open, but 'storage forever' depends on long-term assumptions about falling storage costs.

Gharar is excessive uncertainty or hidden information. Arweave's supply cap, issuance and endowment rules are published in its yellow paper, and the node code is open source. The main uncertainty is in the core promise itself: the endowment can pay for permanent storage only if storage costs keep falling as the model assumes. CryptoUmmah also notes no named security audits. These lower the score slightly within pass.

AR is used to store archives, NFT media, websites and app data.

This criterion looks at what the asset is actually used for. AR pays for storing data such as archives, NFT metadata, publishing and app data, and Arweave has been used to store historical data of other blockchains. No dominant impermissible use is documented, so the criterion is at the maximum.

Fully paid spot AR is widely available and can be held in self-custody.

This criterion asks whether the asset can be owned in a permissible way. AR trades spot with full payment and delivery on major exchanges and can be held in an Arweave wallet. Ownership does not depend on derivatives or leverage, so the criterion is at the maximum.

Arweave preserves data and websites against loss and censorship; no fraud or hack involving AR is documented.

Maslahah weighs benefit against harm. Arweave helps preserve public records, archives and web content that would otherwise disappear. CryptoUmmah found no fraud allegations, rug-pull indicators or regulatory warnings. No concrete harm is documented, so the criterion is at the maximum.